Filters








370 Hits in 2.0 sec

An attempt to geometrize electromagnetism

XiuLin Huang, Yan Xu, ChengZhi Liu
2018 Open Physics  
This study investigates the curved worldline of a charged particle accelerated by an electromagnetic field in flat spacetime. A new metric, which dependes on the charge-to-mass ratio and electromagnetic potential, is proposed to describe the curve characteristic of the world-line. The main result of this paper is that an equivalent equation of the Lorentz equation of motion is put forward based on a 4-dimensional Riemannian manifold defined by the metric. Using the Ricci rotation coefficients,
more » ... he equivalent equation is self-consistently constructed. Additionally, the Lorentz equation of motion in the non-inertial reference frames is studied with the local Lorentz covariance of the equivalent equation. The model attempts to geometrize classical electromagnetism in the absence of the other interactions, and it is conducive to the establishment of the unified theory between electromagnetism and gravitation.
doi:10.1515/phys-2018-0106 fatcat:vzkhv3e63bedjcmkk3fiqaxniy

Smart Skin and Actuators for Morphing Structures

Jinhao Qiu, Chen Wang, Chengzhi Huang, Hongli Ji, Zhiwei Xu
2014 Procedia IUTAM  
Morphing technology on aircrafts has found increased interest over the last decade because it is likely to enhance performance and efficiency over a wider range of flight conditions. The key technologies in morphing aircrafts include adaptive structures, deformable smart skin, driving actuators, flight dynamics and flight control. Among them, the deformable smart skin and light-weight driving actuators have been the main obstacles to the real-world implementation of the morphing aircraft. The
more » ... fficulties in the smart skin rest on the contradiction between its ability to resist aerodynamic load in the normal direction and the in-plane flexibility for morphing functions. This contradiction cannot be solved by using sophisticated properties of the skin materials. It can only be solved by new skin structures, which give anisotropic stiffness for bending and in-plane deformation. In this article two skin structures for morphing aircrafts, the wavy skin structure and the honeycomb skin structure, are introduced. The actuators for morphing aircrafts are required to have large stroke, large output force, good compactness, and good controllability. In this article, piezoelectric-hydraulic actuators are introduced.
doi:10.1016/j.piutam.2014.01.037 fatcat:app7plmjxrb4rjuu6uxewbb2sq

Control and Readout Software in Superconducting Quantum Computing [article]

Cheng Guo, FuTian Liang, Jin Lin, Yu Xu, LiHua Sun, ShengKai Liao, ChengZhi Peng, WeiYue Liu
2018 arXiv   pre-print
Fig. 7 . 7 Data process diagram of Readout Server Futian Liang, Jin Lin, Yu Xu, Lihua Sun, ShengKai Liao, and ChengZhi Peng are with the Hefei National Laboratory for Physical Sciences at the Microscale  ... 
arXiv:1806.04021v1 fatcat:3jsaba7cfnb27ives4hl6cnkvy

The Characteristic Analysis of Weak Current Sensor

Su Chengzhi, Qiao Kuipu, Xu Yudong, Wang Enguo, Li Zhenhui
2012 Modern Applied Science  
., Xu, Y. D. & Wang N. G., 2011) . The structure of mutual inductance current sensor is shown in Figure 1 (a) (Yang C. Z., Chen G.  ... 
doi:10.5539/mas.v6n4p63 fatcat:za5syj2xp5ehblw7njsnc2elcq

Ultra-precision DC source for Superconducting Quantum Computer [article]

Futian Liang, Peng Miao, Jin Lin, Yu Xu, Cheng Guo, Lihua Sun, ShengKai Liao, Ge Jin, ChengZhi Peng
2018 arXiv   pre-print
Futian Liang, Jin Lin, Yu Xu, Cheng Guo, Lihua Sun, ShengKai Liao, and ChengZhi Peng are with the Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University  ... 
arXiv:1806.02645v1 fatcat:7vuthsngtrgsjmiykk43ygu6lu

Facile Synthesis and Characterization of Au Nanoclusters-Silica Fluorescent Composite Nanospheres

Huiping Wang, Chaoyong Xu, Chengzhi Zheng, Wei Xu, Tianjiao Dong, Kanglei Liu, Heyou Han, Jiangong Liang
2013 Journal of Nanomaterials  
Authors' Contribution Huiping Wang and Chaoyong Xu contributed equally.  ... 
doi:10.1155/2013/972834 fatcat:54uqify7lvcxlcfuj2q724emjy

Dislocation Nucleation at a Surface Step by a Multiscale Approach

Chengzhi Li, Darren Segall, Guanshui Xu
2004 Materials Research Society Symposium Proceedings  
Nucleation of a <111> screw dislocation at a step from a {112} surface of tantalum has been studied by a multiscale approach. The profile of the dislocation, represented by the relative displacement between two adjacent atomic layers along the slip plane, is solved based on the variational boundary integral formulation of the Peierls-Nabarro dislocation model, in which the interatomic potential is incorporated based on atomic calculations of generalized stacking fault energies. The results show
more » ... that the atomic scale step significantly facilitates dislocation nucleation from the surface. The results from all atom calculations are also presented to corroborate the results obtained by this multiscale approach.
doi:10.1557/proc-841-r11.3 fatcat:dd2zsvre3vd2pd4ol2iimvez7i

Neglschisandrins A-B: Two New Dibenzocyclooctene Lignans from Schisandra neglecta

Min Chen, Xiumei Xu, Zhihua Liao, Li Dong, Lei Li, Chengzhi Huang
2008 Molecules  
Two new dibenzocyclooctene lignans, neglschisandrins A-B (1-2), were isolated from the stems of Schisandra neglecta. Their structures and stereochemistries were elucidated by spectroscopic methods, including 1D-and 2D-NMR and HR-ESI-MS techniques.
doi:10.3390/molecules13030548 pmid:18463564 fatcat:kwis77w2c5hctnwfkdjtz4ksgy

Nanoparticles as Drug Delivery Systems of RNAi in Cancer Therapy

Diedie Li, Chengzhi Gao, Meiyan Kuang, Minhao Xu, Ben Wang, Yi Luo, Lesheng Teng, Jing Xie
2021 Molecules  
RNA interference (RNAi) can mediate gene-silencing by knocking down the expression of a target gene via cellular machinery with much higher efficiency in contrast to other antisense-based approaches which represents an emerging therapeutic strategy for combating cancer. Distinct characters of nanoparticles, such as distinctive size, are fundamental for the efficient delivery of RNAi therapeutics, allowing for higher targeting and safety. In this review, we present the mechanism of RNAi and
more » ... ly describe the hurdles and concerns of RNAi as a cancer treatment approach in systemic delivery. Furthermore, the current nanovectors for effective tumor delivery of RNAi therapeutics are classified, and the characteristics of different nanocarriers are summarized.
doi:10.3390/molecules26082380 pmid:33921892 fatcat:g54ro6qozzhabfmouw4zxweaim

Survey on Application of Wireless Sensor Network in Smart grid

Pengyu Wang, Hui Hou, Xiongkai He, Chengzhi Wang, Tianqi Xu, Yan Li
2015 Procedia Computer Science  
doi:10.1016/j.procs.2015.05.161 fatcat:cvmt44xjrrdrbmjezaiqqlqrkm

Trade-offs in Meter Deployment for Distribution Network State Estimation Considering Measurement Uncertainty

Junjun Xu, Zaijun Wu, Qinran Hu, Chengzhi Zhu, Xiaobo Dou
2019 IEEE Access  
Future power distribution networks are characterized by changes of uncertain behavior due to the integration of distributed generators (DG) and prosumers, and the design of meter deployment is more critical for the safe and effective network monitoring system. The use of any available and the newly installed metering devices such as micro phasor measurement units (µPMU) and smart meters (SM), could offer much accurate and real-time measuring data. This paper investigates a novel meter
more » ... method for the distribution network planning, with the objective of ensuring the quality of the state estimation (SE) under consideration of measurement uncertainty, while keeping the total amount of heterogeneous meters at a minimum. In particular, the measurement uncertainty in the SE is depicted via the interval arithmetic (IA) theory, which could offer advantageous over the existing probabilistic and fuzzy approaches. The case studies and comparison results based on an actual distribution network demonstrate the feasibility of the proposed IA-based SE algorithm and the meter deployment method. INDEX TERMS Power distribution network, meter deployment, state estimation, distributed generation, micro-phasor measurement unit, smart meter, measurement uncertainty.
doi:10.1109/access.2019.2917928 fatcat:knucm3sfwjeobbmemhnftjmcra

CIDE: An Integrated Development Environment for Microservices

Desheng Liu, Hong Zhu, Chengzhi Xu, Ian Bayley, David Lightfoot, Mark Green, Peter Marshall
2016 2016 IEEE International Conference on Services Computing (SCC)  
Microservices is a flexible architectural style that has many advantages over the alternative monolithic style. These include better performance and scalability. It is particularly suitable, and widely adopted, for cloud-based applications, because in this architecture a software system consisting of a large suite of services of fine granularity, each running its own process and communicating with the others. However, programming such systems is more complex. In this paper we report on CIDE, an
more » ... integrated software development environment that helps with this. CIDE supports programming in a novel agent-oriented language called CAOPLE and tests their execution in a cluster environment. We present the architecture of CIDE, discuss its design based on the principles of the DevOps software development methodology, and describe facilities that support continuous testing and seamless integration, two other advantages of Microservices.
doi:10.1109/scc.2016.112 dblp:conf/IEEEscc/LiuZXBLGM16 fatcat:vcynfyx5gza67p7yg7vygym64y

Minimally invasive unicompartmental knee replacement: Midterm clinical outcome

Shaoqi Tian, Jiangjun Liu, Wanqing Yuan, Yuanhe Wang, Chengzhi Ha, Lun Liu, Qicai Li, Xu Yang, Kang Sun, Gayle E. Woloschak
2017 PLoS ONE  
Objective The purpose of this study was to explore the midterm clinical outcomes of unicompartmental knee replacement (UKR) for medial knee arthropathy through a minimally invasive approach (MIA). Methods , 442 consecutive patients (485 knees) were included in the study. All patients underwent MIA-UKR with the mobile bearing Oxford phrase III prosthesis. The incision was made starting 1 cm medial to the medial pole of the patella and extending distally to the tibial tubercle. Radiographic
more » ... tions include femorotibial angle (FTA) from coronal x-rays and rectified varus deformity angle, while clinical evaluations included Knee Society Score (KSS, clinical score and function score), the Western Ontario and McMaster Universities Arthritis Index (WOMAC) osteoarthritis index and visual analog scale (VAS) for pain. Patients followed-up at 1, 3, 6, 12 months after surgery and each year thereafter. Results Four hundreds and two patients completed the entire follow-up, 40 patients (45 knees) were lost to follow-up. The average follow-up time was 73.0 ± 1.9 months. The mean length of the incisions was 5.0 ± 0.2 cm. The average FTA decreased from 183.6˚± 5.1˚preoperatively to 174.3˚± 4.2˚postoperatively, and the mean rectified varus deformity angle was 9.3˚± 1.2˚. The KSS clinical score improved from 42.4 ± 2.9 to 92.9 ± 3.8, and the function score improved from 53.5 ± 3.8 to 93.5 ± 4.0. The WOMAC score improved from 47.5 ± 3.1 preoperatively to 12.3 ± 1.5 at the last evaluation. The VAS dropped from 7.8 ± 1.9 preoperatively to 1.6 ± 0.2 postoperatively. All clinical evaluations (KSS, WOMAC, VAS) were significantly different (p < 0.05) from pre and post-operative evaluations. The survival rate was 99.1% at 73 months, and the revision rate was 0.9%. Conclusion The midterm clinical outcomes of MIA-UKR are satisfactory in a Chinese patient population, which is a good surgical option for patients with medial arthropathy of the knee. However, longer-term follow-up studies should be performed in these patients.
doi:10.1371/journal.pone.0176082 pmid:28472068 pmcid:PMC5417423 fatcat:3gztd52gezeqjkmcgthh55c2um

CAOPLE: A Programming Language for Microservices SaaS

Chengzhi Xu, Hong Zhu, Ian Bayley, David Lightfoot, Mark Green, Peter Marshall
2016 2016 IEEE Symposium on Service-Oriented System Engineering (SOSE)  
The microservices architecture is widely regarded as a promising approach to service-oriented systems. However, developing applications in the microservices architecture presents three main challenges: (a) how to program systems that consists of a large number of services running in parallel and distributed over a cluster of computers; (b) how to reduce the communication overhead caused by executing a large number of small services; (c) how to support the flexible deployment of services to a
more » ... work to achieve system load balance. This paper presents a programming language called CAOPLE and reports the implementation of the language on a virtual machine called CAVM-2. The paper demonstrates how this approach meets these challenges.
doi:10.1109/sose.2016.46 dblp:conf/sose/XuZBLGM16 fatcat:gwqtqsavyngk3algfapcnv5yjq

Centrifugation-induced fibrous orientation in fish-sourced collagen matrices

Juntao Zhang, Yang Sun, Yan Zhao, Benmei Wei, Chengzhi Xu, Lang He, Cristiano L. P. Oliveira, Haibo Wang
2017 Soft Matter  
An aligned fibrous collagen matrix is fabricated at the macroscale by centrifugation.
doi:10.1039/c7sm01871a pmid:29199311 fatcat:edctbwkp4fdmfnjkts7ua6ujli
« Previous Showing results 1 — 15 out of 370 results